Imagine a huge funnel (your body) and you have to put a bunch of balls (salt) through the funnel continuously. You die if they start going over the funnel instead of down the hole at the bottom (your kidneys).
Your funnel (kidneys) can handle like 20 balls at a time. More than that, and you die.
Normally, because all things considered, you’re going through like 9 balls or so continuously. Sometimes more, sometimes less.
You have a power drink and it adds to that total of 9 balls by 1 or so . So now ten balls. No big deal. You can handle 20.
Seawater is like adding 35 balls. You can only process 20, but once you start adding in 35, your funnel can’t handle it… until it starts filling up, and spilling over, and you die.
If your kidneys could produce a sufficiently concentrated urine to “steal” H2O from seawater, you could drink seawater and hydrate yourself with it. A small australian mouse can do that (crazy kidneys). You, as a human, can’t. You are effectively introducing a sodium load so large that your body will need to GIVE WATER TO IT in order to expel it. That’s why you dehydrate yourself really fast if you drink seawater.
If your kidneys could produce a sufficiently concentrated urine to “steal” H2O from seawater, you could drink seawater and hydrate yourself with it. A small australian mouse can do that (crazy kidneys). You, as a human, can’t. You are effectively introducing a sodium load so large that your body will need to GIVE WATER TO IT in order to expel it. That’s why you dehydrate yourself really fast if you drink seawater.
If your kidneys could produce a sufficiently concentrated urine to “steal” H2O from seawater, you could drink seawater and hydrate yourself with it. A small australian mouse can do that (crazy kidneys). You, as a human, can’t. You are effectively introducing a sodium load so large that your body will need to GIVE WATER TO IT in order to expel it. That’s why you dehydrate yourself really fast if you drink seawater.
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